Figured roll for sugar-cane mills.



J. & c. M NEIL. FIGURED ROLL FOR SUGAR CANE MILLS.

APPLICATION FILED NOV. 30, 1908.

WITNESSES mum/rams MM W 2% z, M W

Patented June 29, 1909.

UNITED STATES PATENT OFFICE.

JOHN MoNEIL AND CHARLES MCNEIL, OF GOVAN, SCOTLAND.

FIGURED ROLL FOR SUGAR-CANE MILLS.

T 0 all whom "it may concern:

Be it known that we, JonN MCNEIL and CHARLES MoNEIL, B. So, subjects of the King of Great Britain and Ireland, and residents of Govan, in the county of Lanai-k, Scotland, have invented certain new and useful Improvements in Figured liolls l'or Sugar-Cane Wills, and of which the l'ollowing is the specification.

Rolls for sugar-cane mills are provided with many forms ol' figuring consisting of series of prismatic or bevel edged entablature like figures intercalated and arranged after many l'ashions, all to varying extent sull'er from the disability that they do not have sullicient purchase upon the cane to drag it through the rolls without slip. The present invention has for its object to overcome this disability.

According to the invention, the advancing edge, of any or all of such figures in which that edge is sulliciently near normal to the direction ol? motion and is sulficiently wide to cause slip in its normal state, instead of being beveled as hitherto at an angle comparatively slight to the surface of the roll, is of such greater angle and so curved into the form of a cusp-like or claw-like tooth as ell'ectively to seize the cane and draw it through the rolls without slip.

An effective term of face is that in which the upper edge adjacent to the figure is radial or nearly radial to the roll and merges in a curve gradually increasing in quickness until it joins the ground ol the roll.

In order that the invention and the manner o'l' perl'orming the same may be properly understood there is hereunto appended a sheet of explanatory drawings showing diagrammatically in section in Figure 1 the advancingor leadingand trailing edges of the improved face, and in Fig. 2 an elevation of part of a roll with figuring of substantially known type but of the improved form of face.

Specification of Letters Patent.

Application filed November 30, 1908.

Patented June 29, 1909.

Serial No. 465,191.

It will be seen in Fig. 1 that the upper and advancing edge A adjacent to the figure B is radial or nearly radial to the axis of the roll and merges in a curve C gradually increasing in quickness until it joins the ground 1) of the roll, while the trailing edgefiankol' the figure merges in a sweeping curve E with the ground D.

In the example of figured roll shown in Fig. '2, the figuring of which elementarily consists of a series of rectangular platcaux with their lengthy sides practically normal to the direction 01' motion 01' the roll, the upstanding and leading edges B of the figures are 01' the cuspor claw-like l'orin shown in Fig. 1, while the trailing surl'aces E merge gradually in the ground D ol the roll.

It is obvious that the l'orm of tooth described is applicable wherever the figures expose a sullicient length of [ace in a direction normal to direction of motion of the roll to tend to cause slip.

What we claim is:-

1. In a sugar-cane mill roll, figuring cxposing considerable lengths ol' [are normal to the direction ol motion, and cusp-like or claw-like teeth formed upon the advancing edge of such figuring, as described.

2. In a sugar-cane mill roll, figuring exposing considerable lengths of lace normal to the direction of motion, cusp-like or clawlike teeth formed upon the advancing edge of such figuring and flanks merging into the ground of the roll, as described.

in testimony whereol' we have signed our names to this specification, in the presence of two subscribing witnesses.

JOHN M oN EIL. CHARLES MoNEIL.

Witnesses:

DAVID FnneUsoN, JAMES Eaonnson. 

